| 摘要 |
A railroad car speed control device including a car wheel-driven generator, a generator-operated solenoid valve and centrifugal switch being energized by a ground-mounted magnet for operating the air brakes in accordance with vehicle speed wherein a positive pressurehead is maintained on a pneumatic motor to keep the generator away from the car wheel, the generator wheel being provided with a shock-resistant flexible connection, a magnetic responsive reed switch having magnetic flux collecting means to be acted upon by a ground-mounted magnet for completing the generator circuit and wherein there is provided a novel shuttle valve arrangement for selectively sending the brake air pressure by way of the conventional AB valve or by way of the additional reservoir.
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